#include<stdio.h>
char *s_strcpy(char *str, char *str1)
{
	char * ret = str;
	while (*str)
	{
		str++;
	}
	while (*str++ = *str1++)
	{

		str1++;
		str++;
	}
	return ret;
}
int main()
{
	char str[15] = "abcdef";
	char str1[] = "ssss";
	char *s=s_strcpy(str, str1);
	printf("%s\n", s);
	return 0;
}